/*
silverPDF is sponsored by Aleyant Systems (http://www.aleyant.com)

silverPDF is based on PdfSharp (http://www.pdfsharp.net) and iTextSharp (http://itextsharp.sourceforge.net)

Developers: Ai_boy (aka Oleksii Okhrymenko)

Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documentation
files (the "Software"), to deal in the Software without
restriction, including without limitation the rights to use,
copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following
conditions:

The above information and this permission notice shall be
included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR SPONSORS
BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.

*/
#region PDFsharp - A .NET library for processing PDF
//
// Authors:
//   David Stephensen (mailto:David.Stephensen@pdfsharp.com)
//   Stefan Lange (mailto:Stefan.Lange@pdfsharp.com)
//
// Copyright (c) 2005-2008 empira Software GmbH, Cologne (Germany)
//
// http://www.pdfsharp.com
// http://sourceforge.net/projects/pdfsharp
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
// DEALINGS IN THE SOFTWARE.
#endregion

using System;
using System.Diagnostics;
#if GDI
using System.Drawing;
#endif
#if WPF
using System.Windows;
using System.Windows.Media;
#endif
using PdfSharp.Drawing;

namespace PdfSharp.Drawing.BarCodes
{
  /// <summary>
  /// Defines the DataMatrix 2D barcode. THIS IS AN EMPIRA INTERNAL IMPLEMENTATION. THE CODE IN
  /// THE OPEN SOURCE VERSION IS A FAKE.
  /// </summary>
  public class CodeDataMatrix : MatrixCode
  {
    /// <summary>
    /// Initializes a new instance of CodeDataMatrix.
    /// </summary>
    public CodeDataMatrix()
      : this("", "", 26, 26, 0, XSize.Empty)
    {
    }

    /// <summary>
    /// Initializes a new instance of CodeDataMatrix.
    /// </summary>
    public CodeDataMatrix(string code, int length)
      : this(code, "", length, length, 0, XSize.Empty)
    {
    }

    /// <summary>
    /// Initializes a new instance of CodeDataMatrix.
    /// </summary>
    public CodeDataMatrix(string code, int length, XSize size)
      : this(code, "", length, length, 0, size)
    {
    }

    /// <summary>
    /// Initializes a new instance of CodeDataMatrix.
    /// </summary>
    public CodeDataMatrix(string code, DataMatrixEncoding dmEncoding, int length, XSize size)
      : this(code, CreateEncoding(dmEncoding, code.Length), length, length, 0, size)
    {
    }

    /// <summary>
    /// Initializes a new instance of CodeDataMatrix.
    /// </summary>
    public CodeDataMatrix(string code, int rows, int columns)
      : this(code, "", rows, columns, 0, XSize.Empty)
    {
    }

    /// <summary>
    /// Initializes a new instance of CodeDataMatrix.
    /// </summary>
    public CodeDataMatrix(string code, int rows, int columns, XSize size)
      : this(code, "", rows, columns, 0, size)
    {
    }

    /// <summary>
    /// Initializes a new instance of CodeDataMatrix.
    /// </summary>
    public CodeDataMatrix(string code, DataMatrixEncoding dmEncoding, int rows, int columns, XSize size)
      : this(code, CreateEncoding(dmEncoding, code.Length), rows, columns, 0, size)
    {
    }

    /// <summary>
    /// Initializes a new instance of CodeDataMatrix.
    /// </summary>
    public CodeDataMatrix(string code, int rows, int columns, int quietZone)
      : this(code, "", rows, columns, quietZone, XSize.Empty)
    {
    }

    /// <summary>
    /// Initializes a new instance of CodeDataMatrix.
    /// </summary>
    public CodeDataMatrix(string code, string encoding, int rows, int columns, int quietZone, XSize size)
      : base(code, encoding, rows, columns, size)
    {
      QuietZone = quietZone;
    }

    /// <summary>
    /// Sets the encoding of the DataMatrix.
    /// </summary>
    public void SetEncoding(DataMatrixEncoding dmEncoding)
    {
      Encoding = CreateEncoding(dmEncoding, Text.Length);
    }

    static string CreateEncoding(DataMatrixEncoding dmEncoding, int length)
    {
      string tempencoding = "";
      switch (dmEncoding)
      {
        case DataMatrixEncoding.Ascii:
          tempencoding = new String('a', length);
          break;
        case DataMatrixEncoding.C40:
          tempencoding = new String('c', length);
          break;
        case DataMatrixEncoding.Text:
          tempencoding = new String('t', length);
          break;
        case DataMatrixEncoding.X12:
          tempencoding = new String('x', length);
          break;
        case DataMatrixEncoding.EDIFACT:
          tempencoding = new String('e', length);
          break;
        case DataMatrixEncoding.Base256:
          tempencoding = new String('b', length);
          break;
      }
      return tempencoding;
    }

    /// <summary>
    /// Gets or sets the size of the Matrix' Quiet Zone.
    /// </summary>
    public int QuietZone
    {
      get { return this.quietZone; }
      set { this.quietZone = value; }
    }
    int quietZone;

    /// <summary>
    /// Renders the matrix code.
    /// </summary>
    protected internal override void Render(XGraphics gfx, XBrush brush, XPoint position)
    {
      XGraphicsState state = gfx.Save();

      switch (this.direction)
      {
        case CodeDirection.RightToLeft:
          gfx.RotateAtTransform(180, position);
          break;

        case CodeDirection.TopToBottom:
          gfx.RotateAtTransform(90, position);
          break;

        case CodeDirection.BottomToTop:
          gfx.RotateAtTransform(-90, position);
          break;
      }

      XPoint pos = position + CodeBase.CalcDistance(this.anchor, AnchorType.TopLeft, this.size);

      if (this.matrixImage == null)
        this.matrixImage = DataMatrixImage.GenerateMatrixImage(Text, Encoding, Rows, Columns);

      if (QuietZone > 0)
      {
        XSize sizeWithZone = new XSize(this.size.width, this.size.height);
        sizeWithZone.width = sizeWithZone.width / (Columns + 2 * QuietZone) * Columns;
        sizeWithZone.height = sizeWithZone.height / (Rows + 2 * QuietZone) * Rows;

        XPoint posWithZone = new XPoint(pos.X, pos.Y);
        posWithZone.X += size.width / (Columns + 2 * QuietZone) * QuietZone;
        posWithZone.Y += size.height / (Rows + 2 * QuietZone) * QuietZone;

        gfx.DrawRectangle(XBrushes.White, pos.x, pos.y, size.width, size.height);
        gfx.DrawImage(matrixImage, posWithZone.x, posWithZone.y, sizeWithZone.width, sizeWithZone.height);
      }
      else
        gfx.DrawImage(matrixImage, pos.x, pos.y, this.size.width, this.size.height);

      gfx.Restore(state);
    }

    /// <summary>
    /// Determines whether the specified string can be used as data in the DataMatrix.
    /// </summary>
    /// <param name="text">The code to be checked.</param>
    protected override void CheckCode(string text)
    {
      if (text == null)
        throw new ArgumentNullException("text");

      DataMatrixImage mImage = new DataMatrixImage(Text, Encoding, Rows, Columns);
      mImage.Iec16022Ecc200(Columns, Rows, Encoding, Text.Length, Text, 0, 0, 0);
    }
  }
}
